A Cu2+-selective fluorescent chemosensor based on BODIPY with two pyridine ligands and logic gate

作者：Huang, Liuqian; Zhang, Jing; Yu, Xiaoxiu; Ma, Yifan; Huang, Tianjiao; Shen, Xi; Qiu, Huayu; He, Xingxing; Yin, Shouchun^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2015, 145: 25-32.

DOI：10.1016/j.saa.2015.02.109

• BODIPY
• Copper ions
• Molecular logic gates
• Colorimetric sensors
• Fluorescent sensors
• Spectroscopic properties

A novel near-infrared fluorescent chemosensor based on BODIPY (Py-1) has been synthesized and characterized. Py-1 displays high selectivity and sensitivity for sensing Cu2+ over other metal ions in acetonitrile. Upon addition of Cu2+ ions, the maximum absorption band of Py-1 in CH3CN displays a red shift from 603 to 608 nm, which results in a visual color change from pink to blue. When Py-1 is excited at 600 nm in the presence of Cu2+, the fluorescent emission intensity of Py-1 at 617 nm is quenched over 86%. Notably, the complex of Py-1-Cu2+ can be restored with the introduction of EDTA or S2-. Consequently, an IMPLICATION logic gate at molecular level operating in fluorescence mode with Cu2+ and S2- as chemical inputs can be constructed. Finally, based on the reversible and reproducible system, a nanoscale sequential memory unit displaying "Writing-Reading-Erasing-Reading" functions can be integrated.

• 出版日期2015-6-15
• 单位杭州师范大学